Feasibility of using phosphate wastes for enhancing high-temperature rheological characteristics of asphalt binder

被引：0
作者：
Mustapha Amrani
Yassine El Haloui
Pouria Hajikarimi
Houssine Sehaqui
Rachid Hakkou
Mohamed Barbachi
Yassine Taha
机构：
[1] ENSA,Laboratoire de mécanique de procédés de l’énergie et de l’environnement LMPEE
[2] Université Ibn Zohr,LAEPT, Faculté des Sciences Semlalia
[3] Université Cadi Ayyad,Department of Civil Engineering, Qazvin Branch
[4] Islamic Azad University,Materials Science and Nano
[5] Mohammed VI Polytechnic University,Engineering Department
[6] Univ. Cadi Ayyad,LCME, Faculté des Sciences et Techniques
来源：
Journal of Material Cycles and Waste Management | 2020年 / 22卷
关键词：
Phosphate waste disposal; Rheological properties; Asphalt binder; Viscoelastic; Dynamic shear rheometer;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The huge amount of wastes is produced annually from the phosphate extraction process which causes environmental problems in terms of energy and pollution. Using these wastes for producing asphalt mixtures can be a cost-effective and eco-friendly solution for managing them. The aim of this study is to investigate the feasibility of using phosphate wastes for fabrication of bituminous materials. Furthermore, the study objective is to discover the most effective waste to be included in asphalt mixtures. These wastes were acquired from the phosphate extraction plant, Ben Guerir city, Morocco. Phosphogypsum, fly ash, and dry phosphate sludge were the materials selected to be used as filler. Four samples were prepared, including an original asphalt binder as well as phosphogypsum, fly ash, and phosphate sludge asphalt samples. Classical characterization, viscous flow, frequency, and temperature sweep tests were carried out on these samples. The results showed that the viscous flow behavior of the asphalt binder containing phosphogypsum and fly ash wastes has been substantially more improved compared with binder with phosphate sludge filler. It was also shown that phosphogypsum waste enhances the mechanical properties of asphalt binder as well as its performance against rutting more than fly ash and phosphate sludge wastes.
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页码：1407 / 1417
页数：10
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